A 5g bullet moving at 100 m/s collides a wooden target, initially at rest. The mass of wooden target is 1kg. If after the collision the bullet is embed in the wooden block, what is the final speed of the wooden block?
1. A 5g bullet moving at 100 m/s collides a wooden target, initially at rest. The mass of wooden target is 1kg. If after the collision the bullet is embed in the wooden block, what is the final speed of the wooden block?
This is innelastic collision. so we can use formula:
m1.v1+m2v2=(m1+m2)vf
5x100+1kgx0=(5+1000)vf
500+0=1005Vf
Vf=500/1005=0.49 m/s
2. A block of mass 5 kg initially at rest at the origin is acted on by a force along the positive X - direction represented by F= (20 +5x) N. Calculate the work done by the force during the displacement of the block from x=0 at x = 4mMakasih ^^"
Question:
A block of mass 5 kg initially at rest at the origin is acted on by a force along the positive X - direction represented by F= (20 +5x) N. Calculate the work done by the force during the displacement of the block from x=0 at x = 4mAnswer:
The work done by the body is 10 JoulesExplanation :
Given that :
A block of mass 5 kg initially is at rest Aforce of F = ( 20 + 5x ) N is acted on it along the positive x direction along the displacement of x = 0 to x = 4mToFind:
The work done on the bodyFormula Used :
[tex]\bigstar \; {\underline{\boxed{ {\bf Work \; done}= \int \vec{\bf F . } \vec{\bf dx} }}}[/tex]
Required Solution :
Since a variable force acts upon the body[tex]\bigstar[/tex] Formula to find the work done
[tex]\leadsto \; {\pink{\boxed{ {\bf Work \; done}= \int\vec{\bf F . } \vec{\bf dx} }}}[/tex]
[tex]\longrightarrow \vec{\sf F} . \vec { \sf dr} = \sf | F | |dx| \cos(\emptyset )[/tex]
[tex]\bigstar[/tex] Here ,
As the force and the displacement are in the same direction the angle between them is 0° [ Cos ( 0 ) = 1 ]
[tex]\longrightarrow \rm Work \; done = \displaystyle \int^4_0 \rm F . dx[/tex]
[tex]\longrightarrow \rm Work \; done = \displaystyle \int^4_0\rm ( 20+ 5x ) \;dx[/tex]
[tex]\longrightarrow \rm Work \; done = \displaystyle \int^4_0 \rm 20 \; dx + \int^4_0 5x \; dx[/tex]
[tex]\longrightarrow \rm Work \; done = \displaystyle 20 \int^4_0 \rm dx + 5 \int^4_0 x \; dx[/tex]
[tex]\bigstar[/tex] Integrating further,
[tex]\longrightarrow \rm Work \; done = 20 \bigg[ x \bigg]^4_0 + 5 \bigg[ \dfrac{x^2}{2} \bigg]^4_0[/tex]
[tex]\longrightarrow \rm Work \; done = 20 \bigg[ 4 - 0 \bigg]+ 5 \bigg[ \dfrac{4^2- 0^2}{2} \bigg][/tex]
[tex]\bigstar[/tex]Calculating the work done,
[tex]\longrightarrow \rm Work \; done = 20 ( 4) + 5 ( 8 - 0 )[/tex]
[tex]\longrightarrow \rm Work \; done = 20 ( 4) + 5 ( 8 )[/tex]
[tex]\longrightarrow {\red{\underline{\underline{\rm{ Work \; done_{ (on \; the \; particle)}= 120 \; Joules }}}}}[/tex]
Therefore :
The work done on the particle is 120 Joules▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
3. Jawab pertanyaan ini dan berikanlah penjelasannya! The spring is placed between the wall and the 10-kg block. If the block is subjected to a force of F = 500 N, determine its velocity when s = 0.5 m. When s = 0, the block is at rest and the spring is uncompressed. The contact surface is smooth. Jawab pertanyaan ini dan berikanlah penjelasannya!
Jawaban:
Jawab pertanyaan ini dan berikanlah penjelasannya! The spring is placed between the wall and the 10-kg
block. If the block is subjected to a force of F = 500 N,
determine its velocity when s = 0.5 m. When s = 0, the
block is at rest and the spring is uncompressed. The contact
surface is smooth. Jawab pertanyaan ini dan berikanlah penjelasannya!
Penjelasan:
Itu jawabannya yang Ngakak ^_^4. A...... is usually made of iron and steel
Jawaban:
A BLACKSMITHIS USUALLY MADE OF IRON AND STEEL
Penjelasan:
BLACKSMITH:TUKANG BESI
5. Ita is sick now...she Take a rest at home
Jawaban:
should
Penjelasan:
maaf klo salah
jdkan jawaban terbaik
6. steel to molten steel is an example of a
Jawaban:
benda padat / solid object
semoga membantu
7. the shapes of a block board is
Jawaban:
rectangel / square
maaf kalo salah
Jawaban:square
Penjelasan:
8. what is completely filled while being and empty when at rest
class mungkin. kalo belajar penuh kalo istirahat kososng ¿
9. A rectangular block is 24 cm long. A cube with a volume of 216 cm3 is cut from the block. What is the volume of the remaining block?
V.cube = s³
s = √V.cube
s = √216
s = 6cm
[tex] \: \: [/tex]
V = V.rectangular - V.cube
V = (p × s²) - 216
V = (24 × 6²) - 216
V = 864 - 216
V = 648cm³
Jawaban:
648 cm³
penjelasan ada di foto yaa, maaf kalo kurang jelas
kalo ada yang salah bantu dikoreksi :))
10. why don't you ....rest?what is the correct setence?(take a rest or taking a rest?bantu dong
Jawaban:
kenapa kamu tidak istirahat?
apa kalimat yang benar?
(istirahat atau istirahat?
artinya
11. when an object is at rest,how will it begin to move
when the object is given a force
Jawaban:
An object will move when it is stricken/ hit by a force.
#maaf kalau salah <3
12. A block of mass 3 kg is hung from aspring, causing it to stretch 12 cm atequilibrium, as shown above. The 3kg block is then replaced by a 4 kgblock. And the new block is releasedfrom the position shown above. The 4kg block fall before its direction isreversed at...VFstem12 cm4 kg3 kgA. 9 cmB. 18 cmC. 24 cmD. 32 cmE. 48 cm
Jawaban:
x2 = 16 cm
Penjelasan:
F = kx
k konstant untuk kasus ini
k = F/x = constant
mg/x = constant (karena g juga konstant)
m/x = constant
diketahui:
m1 = 3kg
x1 = 12 cm
m2 = 4 kg
m1/x1 = m2/x2
x2 = m2 x1 / m1 = 4(12)/(3)
x2 = 16 cm
13. Rahmat is...he takes a rest.
tired = lelah
terima kasih dont forget to like n follow meRahmat is Tired he takes a rest.
Maaf Kalau Salah ^-^
♥♡♥♡♥♡♥♡♥♡
14. meta has a headache while she is at school.teacher asks her to go to ... to take a rest
school health unit (SHU/UKS)home. meta has a headache while she is at school.teacher asks her to go to home to take a rest
15. At your house room/ place for take a rest is?
Jawaban:
bed room
Penjelasan:
maaf klo salah
16. aat rest is theof it?TPorad12Calenusti
Penjelasan:
Sebuah
saat istirahat adalah
dari itu?
T
Porad
12
Calenus
ti
17. Yang benar "rest in the forest atau rest at the forest"
Jawaban:
REST AT THE FOREST
Penjelasan:
SEMOGA MEMBANTU:)
rest in the forest lebih bener. soalnya di dalem… penggunaan at biasanya untuk sekitarsemoga membantu.
18. steel block has mass 40 g it is in the form of a cube each edge of the cube is 3 cm long so what is the density
Jawaban:
1.481g/cm³
Penjelasan:
density = mass/ volume,
volume of cube is s³
mass = 40 g
v = 3.3.3= 27 cm
density = 40/27
= 1.481 g/cm³
19. Jawab Pertanyaan Berikut Dengan Benar!1. Janitor is someone who...2. Teacher is someone who...3. Student is someone who...3. Principal is someone who...4. Gardener is someone who...5. Where is place you take a rest in school?...Point Lumayan Jangan Ngasal Atau Aku Block Ya!!!
Jawaban:
1.is cleaning as a job
2.teaching the students
3.study in school
4.is chief or head of a school
5.works in the garden to takecare plants
6.canteen
Penjelasan:
maaf klo salah
20. FISIKA - KELAS 10 - MOMENTUM DAN IMPULS A 10 kg block is released from rest at point A on track ABCD as shown below. The block collides in a perfectly inelastic manner with another block, initially at rest, of mass 5 kg located just before section BC. The track is smooth except for section BC, of length 6 meters. The blocks hit the spring ( k = 4000 N/m) and compress it a distance of 0.3 meters from its equilibrium position. Determine the coefficient of kinetic friction between the blocks and section BC of the track.
gak bisa ngirim 2 foto, jadi mesti disatuin T-T. kalau gak jelas nanti aku kirim satu satu.
cmiiw.DYNAMICS
• motion and force
• work and energy
m1 = 10 kg
m2 = 5 kg
g = 10 m/s²
h = 10 m
S = 6 m
k = 4000 N/m
∆x = 0,3 m
u = __?
0 komentar:
Posting Komentar